python - From a string, how do you return only the words that don't begin with a vowel?

I have a string E.g. "A dog is a good pet"

I would like to be able to return only the words that begin with a consonant. ["dog", "good", "pet"] as a list

def consonant_first(newstr):
    for char in newstr.split():
        if char[0] in newstr.split() ==  vowels1:
            return newstr.split() 

print(newstr)